Quiz #32

21 November 2011

S.I. Session 32 Quiz

This quiz covers material from the lecture on Friday, November 18^th.

Part a) Match the term to its definition:

                TERMS:

a)Carbonate Compensation Depth          b)Mid Ocean Ridges       c)Turbidity Current

d)Continental Shelves                                   e)Turbidites                       f)Continental Slope

g)Active                                                               h)Passive                             i)Accretionary Wedge

                DEFINITIONS:

1)__Consists of sediments scraped off of the subducting slab.

2)__These deposits form seaward of submarine fans.

3)__The sites at which ocean basins are formed.

4)__The depth below which carbonate sediments do not accumulate.

5) __These are important as fishing grounds and as oil and gas reservoirs.

6)__There are two types of these margins, Marianas and Andean.

7)__At a passive continental margin, this is the remnant of the original rift zone.

8)__A flow of muddy water down the continental slope.

9)__The east coast of North America is a good example of one of these continental margins.

Part b) What happens at the carbonate compensation depth? Why?

Part c) True or False:

                Mark T (true) or F (false) in the blank provided:

1)__The carbonate compensation depth is about 3.5 kilometers below the ocean’s surface.

2)__Passive continental margins are tectonically quiet.

3)__At an active continental margin of Andean type, there is no great accumulation of sediments above the accretionary wedge.

4)__ At an active continental margin of Marianas type, there is no great accumulation of sediments above the accretionary wedge.

5)__The data used to generate the global map of seafloor topography was gathered by manned submersibles.

6)__Carbonate deposits form in shallow water.